This utility will extract the SeaStar / SeaWiFS data from a file saved by the
Timestep HRPT software. To work correctly, the source file must be in 10-bit
format and have been saved with all 5 HRPT bands. 

First, you need to receive the data using the standard HRPT software. The
displayed image will look very odd, with lots of vertical stripes because of
the different number of bands. It should be recognisable as an image even so. 

To extract the 8-band data, save the file and exit the HRPT software.

Then type the following command at the DOS prompt :

SEASTARX SourceFile FirstLine NumLines

where :

SourceFile is the name of the source .HRP file (WITHOUT the extension added!)

FirstLine is the number of the first line in the file to extract (default=1)

NumLines is the total number of lines to extract (default=1000)

eg.

SEASTARX HRPTFILE 1000 800 will extract lines 1000 to 1799 from the file
HRPTFILE.HRP

The destination files will have the same name as the source but with
extensions .B1 to .B8 for the 8 separate SeaWiFS bands.